Cloth-cutting machine



(No Model.)

L. E. JONES. CLOTH CUTTING MACHINE.

No. 486,532. Patented Nov. 22 1892.

' UNITED STATES I PATENT Crricn. I

LABAN ELLSWORTl-I JONES, OF CHICAGO, ILLINOIS.

CLOTH-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 486,532, dated November22, 1892 Application filed January 2, 1892- Serial No. 416,859. (Nomodel.)

To all whom, it may concern.-

7 Be it known that I, LABAN ELLSWORTH JONES, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Machinesfor Cutting Cloth and other Fabrics, of which ihefollowing is aspecification.

My invention relates to that class of cutting devices intended forcutting masses of fabric laid in sheets, one upon the other, upon asuitable support or table; and my invention consists in a machineembodying the features of construction and arrangement of parts andhaving the mode of operation substantially as hereinafter more fully setforth.

In the accompanying drawings, Figure 1 is a side view of a cutter forcutting fabrics, embodying my invention. Fig. 2 is a front view. Fig. 3is a side view showing a modification. Fig. 4 is a front view of Fig.3.Figs. 5 and 6 illustrate different forms of knives.

The frame Bis constructed in any suitable manner to support theoperating parts, and preferably is provided with a base A, that willenable the frame to slide readily over a proper surfaceas, for instance,the surface of a table. The knife C consists of a thin fiat blade, whichhas one side or edge preferably beveled or inclined, as shown in Figs.1, 3, 5, and 6, this inclination being in the form of a curve, or it maybe straight, as shown in dotted lines in Fig. 5. In any case the bladeis sharpened to form a very sharp cutting-edge along the said inclinedportion and the contiguous straight portion. The knife is so connectedat or near one end only-that is, the end opposite to its cutting edge-toa proper support and operating devices that the cutting edge of theknife will approach the material to be cut-as, for instance, a mass ofsheets of fabric, laid one upon the otherso that each portion of thesaid cutting-edge will move first toward the material, then downwardlyand farther toward thematerial in an inclined direction, and thenbackward in an inclined direction, so that each portion of thecutting-edge of the knife moves approximately in a path corresponding toa circle, as indicated in dotted lines in Fig. 1.

In the construction shown in Figs. 1 and 2 the knife is carried-by aknife-bar D, which struction the revolution of the driving-shaft willimpart to each of the disks G a movement in the same direction, and theknifecarrier will be carried upward and forward 'and downward and backto impart the aforedescribed motion to the knife.

In the construction shown in Figs. 3 and at a like movement is impartedto the knife and its carrying-bar through the medium of three disks G Gand G, the latter being connected to the end of the driving-shaft 1. Ineach case each portion of the cutting-edge of the knife has afour-motion actionthat is, it moves forward and downward and back andupward.

As the knife does not have any cutting action in rising, I prefer tocombine with it some kind of a guard that will keep it from contact withthe material, except in the actual cutting. I therefore provide a guardin the form of plates 5 5, arranged to receive the knife between them,and with their edges y in such position that the cutting-edge of theknife will not be forward of said plates and in contact with thematerial until the knife in moving forward begins, also, its downwardmovement.

The knife-bar may consist of a Hat bar con nected With the wrist-pins 2upon the disks situated on one side only of the frame; but I prefer tosecure increased stability by having two sets of disks and two sets ofwristpins, but on opposite sides of the frame, as shown in Figs. 1 toat, and to use a support for the knife in the form of a yoke to bothsides of the frame and receiving both sets of wristpins, as shown.

The driving-shaft 1 may be connected by means of a flexible shaft, abelt, or revolving shaft and pinions to any suitable motor, whichtherefore would be independent of the frame of the device; but I preferin most instances to make use of an electromotor mounted upon the frameand carried with the deivce, being connected with a suitable generatorthrough the medium of fiexi ble conductors. Any suitable form of motormay be employed. Thus in Fig. 2 I have illustrated a motor K, connectedwith the frame, the armature 9 upon the driving-shaft 1, withbinding-posts 6 6 so arranged as to permit the conductors to be readilyconnected thereto and permit the frame of the apparatus to be moved backand forth upon the table in order to bring the knife in proper positionto travel into position in relation to the material and to be carried soas to cut properly. By giving to the knife the'fourmotion action, asheretofore described, I secure a shearing effect of most desirablecharacter, and the efficiency'of which is greatly increased by impartingthe before-described inclination to the cutting-edge at the lower end,so that thecut is a progressive one-from the top to the lower portion ofthe mass,in-

creasing with the forward, downward, and

backward movement of the knife.

W'ithout limiting-myself to the precise construction and arrangement ofparts shown,=I claim- 1. A machine for cutting fabrics, provided with aknife consisting of a flat blade secured in a holder at one end only, amovable frame,

and means for imparting movements tosaid blade for carrying each portionof the cutting-edge in a circularpath,-substantially as set forth.

2. The combination, in a fabric-cutting machine, of a movable frame, aknife-carrier having bearings for two or more Wrist-pins upon revolvingdisks, and a knife-blade projecting beyond the end of the carrier andhaving its cutting-edge inclined toward the lower end, substantially asdescribed.

3. The combination, in a machine for cutting fabrics, of a movableframe, a knife, a knife bar or carrier to which one end only of theknife is secured, and two or more revolving disks, each provided with awrist-pin extending intoa bearing in the knife bar or carrier,substantially as and for the purpose described.

4. The combination, with the frame and the knife of a fabric-cuttingmachine, of a carrier in the form of a yoke, in which one end only ofthe knife is held, and shafts carrying disks which are upon oppositesides of the frame, each with a wrist-pin extending into a bearing ofthe 'yokeysubstantially as described;

. 5. The-combination, with the knife'held in a carrier by one end only,of a fabric-cutting machine, means for imparting to the same a movementto carry each portion of the cutting-edge in a circular path, and aguard arranged with its edgey in position to prevent the contact of thecutting-edge of the knife with the fabric duringthe upward movement ofthe knife, substantially as and for the purpose set forth.

In testimony whereofI have signed myname to this specification in thepresence of two subscribing witnesses.

LABAN ELLSWORTI-I JONES.

. Witnesses:

(J. B. ASKEW, FoRnE BAIN.

